"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 故障&可靠性测试
Case Name   : 主机执行恢复指令，-h指定主节点，主节点恢复前后时区不一致（时区需要修改postgres.conf文件）
Create At   : 2020/11/27
@zou_jialiang0505328126
Description :
    1.备份数据
    2.修改主节点时区
    3.恢复数据库
    4.查询数据库当前时区
Expect      :
    1.备份成功
    2.修改成功
    3.恢复成功
    4.数据库时区为PRC
History     :
"""

import os
import unittest
import sys
import time
from yat.test import macro
from yat.test import Node

sys.path.append(sys.path[0] + "/../")
from testcase.utils.CommonSH import *
from testcase.utils.Common import Common
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class Basebackup(unittest.TestCase):
    commonshpri = CommonSH('PrimaryDbUser')
    commonshsta = CommonSH('Standby1DbUser')
    nodes_tuple = ('PrimaryDbUser', 'Standby1DbUser', 'Standby2DbUser')

    @RestartDbCluster(*nodes_tuple)
    def setUp(self):
        self.log = Logger()
        self.log.info('------------Opengauss_Reliability_Tools_Backup_Case040.py 开始执行------------')
        self.dbPrimaryDbUser = Node(node='PrimaryDbUser')
        self.dbStandby1DbUser = Node(node='Standby1DbUser')
        self.dbPrimaryRootNode = Node(node='PrimaryRoot')
        self.Constant = Constant()
        self.common = Common('PrimaryRoot')
        self.backup_file = os.path.join(macro.DB_BACKUP_PATH, 'backup_dir')
        self.primary_hostname = self.dbPrimaryRootNode.sh('hostname').result()

        self.log.info('-------------------创建备份路径-----------------------------------')
        shell_cmd = f'rm -rf {self.backup_file}; mkdir {self.backup_file};'
        self.log.info(shell_cmd)
        result = self.dbPrimaryDbUser.sh(shell_cmd).result()
        self.log.info(result)

    def test_backup(self):
        self.log.info('--------------------1.备份数据：成功----------------------------')
        result = self.commonshpri.execu_gs_backup('backup', self.primary_hostname, self.backup_file, "--all")
        self.assertIn(self.Constant.BACKUP_BACKUP_SUCCESS_MSG, result)
        cmd = f'ls -l {self.backup_file} |grep "^-"|wc -l'
        self.log.info(cmd)
        result = self.dbPrimaryDbUser.sh(cmd).result()
        self.log.info(result)
        self.assertLess(0, int(result))
        time.sleep(3)

        self.log.info("-----------------------2.修改主节点时区：成功-----------------------------")
        self.log.info("============修改 postgresql.conf================")
        cmd = '''           cp {dbIns}/postgresql.conf {dbIns}/postgresql.conf.timezone;
                            echo "timezone=America/New_York" >> {dbIns}/postgresql.conf
                        '''.format(dbIns=macro.DB_INSTANCE_PATH)
        self.dbPrimaryDbUser.sh(cmd)

        self.log.info("==========重载配置文件=========")
        result = self.commonshpri.reloadDbConfig()
        self.log.info(result)
        self.assertIn(self.Constant.RELOAD_SUCCESS_MSG, result)

        result = self.commonshpri.executDbSql(f"show timezone;")
        self.log.info(result)
        self.assertIn('America/New_York',result)

        self.log.info('-------------------3.恢复数据库:成功-----------------------------------')
        result = self.commonshpri.execu_gs_backup('restore', self.primary_hostname, self.backup_file, "--all")
        self.assertIn(self.Constant.BACKUP_RESTORE_SUCCESS_MSG, result)

        self.log.info('-------------------4..查询数据库当前时区:PRC------------------------')
        self.log.info("==========重载配置文件=========")
        result = self.commonshpri.reloadDbConfig()
        self.log.info(result)
        self.assertIn(self.Constant.RELOAD_SUCCESS_MSG, result)
        result = self.commonshpri.executDbSql(f"show timezone;")
        self.log.info(result)
        self.assertIn('PRC', result)

    def tearDown(self):
        self.log.info('-------------------------环境清理------------------------')
        self.log.info('--------------------------删除备份文件------------------')
        shell_cmd = f'rm -rf {self.backup_file}'
        self.log.info(shell_cmd)
        result = self.dbStandby1DbUser.sh(shell_cmd).result()
        self.log.info(result)

        self.log.info("-----------恢复系统时区--------------------")
        result = self.commonshpri.executDbSql(f"show timezone;")
        if 'PRC' not in result:
            cmd = f"mv {macro.DB_INSTANCE_PATH}/postgresql.conf.timezone {macro.DB_INSTANCE_PATH}/postgresql.conf;"
            self.dbPrimaryDbUser.sh(cmd)
            result = self.commonshpri.reloadDbConfig()
            self.log.info(result)
        else:
            self.dbPrimaryDbUser.sh(f"rm -rf {macro.DB_INSTANCE_PATH}/postgresql.conf.timezone")
        self.log.info('----------Opengauss_Reliability_Tools_Backup_Case040.py 执行结束-----------------------')
